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參數(shù)資料
| 型號： | STV8226 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Multistandard TV Audio Processor and Digital Sound Demodulator |
| 中文描述： | 多標(biāo)準(zhǔn)電視音頻處理器和數(shù)字聲音解調(diào)器 |
| 文件頁數(shù)： | 44/97頁 |
| 文件大?。?/td> | 1871K |
| 代理商： | STV8226 |
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Register List
STV82x6
44/97
Note:
These registers allow direct access to the demodulator signal detectors.
AGCC
AGC Control for IF ADC
FM1_CAR
0
Channel 1 FM/AM Carrier detector flag
0: Not detected
1: Detected
FM1_SQ
0
Channel 1 FM Squelch detector flag
0: Not detected
1: Detected
Address (hex): 0Eh
Type: R/W
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
AGC_CMD
0
0
AGC_REF[2:0]
AGC_CST[1:0]
Bit Name
Reset
Function
AGC_CMD
0
Automatic Gain Control Command Mode
Normally set to 0 enabling automatic mode. For L/L standards, the AGC should be switched off
due to the presence of the AM sound carrier. In this case, a fixed gain value should be set using
the AGCS register.
0: Automatic mode. AGC controlled by the AUTOSTD function. (Default)
1: Manual/Forced mode
Bits[6:5]
00
Reserved.
AGC_REF[2:0]
100
This bitfield is used to defines the clipping level which adjusts the allowable proportion of samples
at the input of the ADC which will be clipped. The AGC tries to maximize the use of the full scale
range of the ADC. The default setting gives a ratio of 1/256.
Clipping Ratio
Clipping Ratio
000:
001:
010:
011:
1/16 (Single carrier)
1/32
1/64
1/128
100:
101:
110:
111:
1/256 (Default
1/512
1/1024
1/2048 (Multiple carriers)
AGC_CST[1:0]
01
AGC Time Constant
This is the time constant between each step of 1.25 dB by the ADC.
Step Duration (ms)
00
01
10
11
1.33
2.66
5.33
10.66
Bit Name
Reset
Function
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| STV8227 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders |
| STV8227T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders |
| STV8230 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TV/Video Signal Processor |
| STV8236 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Multistandard TV Audio Processor and Digital Sound Demodulator |
| STV8237 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders |
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